Guys, he said it was 14 splines...
26 splines is for the 305 V8 Camaro ONLY,
everything else is 14 splines.
Since the front half of the tranny is from a Camaro instead of an S10, shortening of the input shaft and collar may not be necessary. As I said before, just compare it to your 3 spd after you pull it out to be sure. It should be 6 1/2", with a collar about 3 3/8". If the shaft sticks out 7", then it needs to be shortened...
Looking at the Astro driveshaft in my '53 truck, it is 50 1/4" from center to center, with about 3 1/2" from the front joint to the end of the tranny. This is on a lowered truck with the driveshaft nearly level. It still has about 1 1/2" of travel left on it.
